共享文件时，Android 应用在旧应用中打开

Question

我有一个奇怪的问题。我已将我的应用设置为在清单中打开文件的默认启动器，如下面的代码示例。

例如，如果我选择从默认的 android 下载应用程序打开一个文件，它看起来像这样：

有没有办法让它在新的应用程序/窗口中打开，这样下载应用程序和我的应用程序看起来就像是两个不同的应用程序？

清单文件

    <activity
        android:name=".SplashActivity"
        android:label="@string/app_name"
        android:noHistory="true"
        android:screenOrientation="sensorPortrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />
            <action android:name="android.intent.action.SEND" />

            <category android:name="android.intent.category.DEFAULT" />

            <data android:mimeType="application/pdf" />
            <data android:mimeType="text/plain" />
            <data android:mimeType="application/rtf" />
            <data android:mimeType="image/jpeg" />
            <data android:mimeType="image/png" />
            <data android:mimeType="image/tiff" />
            <data android:mimeType="image/bmp" />
            <data android:mimeType="image/gif" />
            <data android:mimeType="application/postscript" />
            <data android:mimeType="application/msword" />
            <data android:mimeType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" />
            <data android:mimeType="application/vnd.ms-powerpoint" />
            <data android:mimeType="application/vnd.ms-excel" />
            <data android:mimeType="application/vnd.openxmlformats-officedocument.wordprocessingml.document" />
        </intent-filter>

    </activity>

完整清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="princh.princh">

    <uses-permission android:name="android.permission.INTERNET" />
                   //Allows the app to use the internet connection
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
       //Allows the app to check the connection status in order to determine whether data can be downloaded.
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     //Allows the app to cache map tile data in the device's external storage area.
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     //Allows the app to use WiFi or mobile cell data (or both) to determine the device's location.
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
       //Allows the app to use the Global Positioning System (GPS) to determine the device's location to within a very small area.
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:hardwareAccelerated="true"
        android:icon="@mipmap/princh_launcher_icon"
        android:label="@string/app_name"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar" >
        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />
        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="AIzaSyD1e3EbexMClXfkyULNViJlOPgeubzZdfI" />

        <service
            android:name=".network.NetworkManager"
            android:exported="false" >
            </service>


    <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:screenOrientation="sensorPortrait" >
            <intent-filter>
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".PrintJobActivity"
            android:label="@string/app_name"
            android:screenOrientation="sensorPortrait" >
        </activity>
        <activity
            android:name=".SelectPrinterOptionsActivity"
            android:label="@string/title_activity_select_printer_options"
            android:launchMode="singleTop"
            android:parentActivityName=".PrintJobActivity"
            android:screenOrientation="sensorPortrait">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".PrintJobActivity" />
        </activity>
        <activity
            android:name=".PrintRangeActivity"
            android:label="@string/title_activity_print_range"
            android:parentActivityName=".PrintJobActivity"
            android:screenOrientation="sensorPortrait">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".PrintJobActivity" />
        </activity>
        <activity
            android:name=".ShowPrinterMapActivity"
            android:label="@string/title_activity_select_printer_map"
            android:parentActivityName=".SelectPrinterOptionsActivity"
            android:screenOrientation="sensorPortrait">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".SelectPrinterOptionsActivity" />
        </activity>
        <activity
            android:name=".PrintPreviewActivity"
            android:label="@string/title_activity_print_preview"
            android:parentActivityName=".SelectPrinterOptionsActivity"
            android:screenOrientation="sensorPortrait">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".SelectPrinterOptionsActivity" />
        </activity>

        <activity
            android:name=".OrderInfoActivity"
            android:label="@string/title_activity_order_info_activitty"
            android:screenOrientation="sensorPortrait">
        </activity>
        <activity
            android:name=".PaymentActivity"
            android:label="@string/title_activity_payment"
            android:screenOrientation="sensorPortrait"
            android:windowSoftInputMode="adjustNothing">
        </activity>
        <activity
            android:name=".OrderDetailsActivity"
            android:label="@string/title_activity_order_details"
            android:screenOrientation="sensorPortrait">
        </activity>
        <activity android:name="sdt.brc.android.BarcodeScanActivity"
            android:label="@string/app_name">
            <intent-filter>
                <category android:name="android.intent.category.EMBED" />
            </intent-filter>
        </activity>
        <activity
            android:name=".TermsAndConditionsActivity"
            android:label="@string/title_activity_terms_and_conditions"
            android:screenOrientation="sensorPortrait">
        </activity>
        <activity
            android:name=".SplashActivity"
            android:label="@string/app_name"
            android:noHistory="true"
            android:screenOrientation="sensorPortrait"
            android:process=":PrinchProcess">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <action android:name="android.intent.action.SEND" />

                <category android:name="android.intent.category.DEFAULT" />

                <data android:mimeType="application/pdf" />
                <data android:mimeType="text/plain" />
                <data android:mimeType="application/rtf" />
                <data android:mimeType="image/jpeg" />
                <data android:mimeType="image/png" />
                <data android:mimeType="image/tiff" />
                <data android:mimeType="image/bmp" />
                <data android:mimeType="image/gif" />
                <data android:mimeType="application/postscript" />
                <data android:mimeType="application/msword" />
                <data android:mimeType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" />
                <data android:mimeType="application/vnd.ms-powerpoint" />
                <data android:mimeType="application/vnd.ms-excel" />
                <data android:mimeType="application/vnd.openxmlformats-officedocument.wordprocessingml.document" />
            </intent-filter>

        </activity>
        <activity
            android:name=".JobStatusActivity"
            android:label="@string/title_activity_job_status"
            android:screenOrientation="sensorPortrait">
        </activity>
        <activity
            android:name=".ShowReceiptActivity"
            android:label="@string/title_activity_show_receipt"
            android:screenOrientation="sensorPortrait">
        </activity>
        <activity
            android:name=".QRCodeReaderActivity"
            android:label="@string/title_activity_qrcode_reader"
            android:screenOrientation="sensorPortrait">
        </activity>
        <activity
            android:name=".PrintjobHistoryActivity"
            android:label="@string/title_activity_printjob_history"
            android:screenOrientation="sensorPortrait">
        </activity>
    </application>

</manifest>

Answer 1

将documentLaunchMode 属性添加到您的清单中。默认值为none，您可能希望使用intoExisting，或always。

您还可以查看 allowTaskReparenting 和 taskAffinity 以更好地控制任务和堆栈。